Megger 655535 Specifications

TDR2000/2 (CFL535F)

Cable Fault Locator

TDR2000/2 (CFL535F)

Cable Fault Locator

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20 km range at VF = 0.90

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Monochrome or color options

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Primary cell or rechargeable options

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Large backlit LCD Display

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Dual cursor measurement

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Intermittent fault location

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Output pulse amplitude and width control

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"TX Null" technology

DESCRIPTION

The TDR2000/2 is a state of the art, monochrome or color,
dual channel Time Domain Reflectometer, capable of
identifying and locating a wide range of faults on metallic
cables.

The TDR2000/2 has a minimum resolution of 0.1m and a
maximum range of 20 km at VF=0.9 and 16 Km (48,000 ft.)
at 0.65 VF. The TDR2000/2 can perform single or dual
channel measurements on a wide range of metallic cables.
Active channels can be compared with each other or with
previously stored traces from memory. Differential
channel measurements are possible and cross talk between
channels can also be identified.

All results are displayed on a high resolution, QVGA color
display. Full contrast adjustment provides optimum
display contrast in a variety of ambient light conditions.

3 Configurations Options

The TDR2000/2 comes in three configurations:

TDR2000/2 Monochrome primary cell

A fully featured high resolution TDR with backlit
monochrome display and powered by 8 x AA (LR6)
batteries.

TDR2000/2RM Monochrome rechargeable

As the TDR2000/2 but with a rechargeable NiMH battery
pack and charger in place of the Dry cells.

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No blocking filter required

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Trace Master PC software included

TDR2000/2R Color rechargeable

As the TDR2000/2RM but with a color high resolution
display providing excellent trace separation in dual trace
modes. The unit is also powered by a rechargeable NiMH
and includes battery charger.

Intermittent Mode

An ‘intermittent mode’ continually updates and shows any
transient reflections. Any intermittent fault leaves a
permanent record on the display, capturing elusive faults.

Dual cursors

The TDR2000/2 can display either single or dual cursors.
Single cursor mode displays the distance from the start of
the cable to the cursor. In dual cursor mode the distance
between faults can be measured.

Fast Find key

One press of the find key automatically adjusts the range
and gain and positions the cursor to the major event on
the cable.

Tx Null

Tx Null helps eliminate the ‘dead zone’ at the start of the
displayed trace, normally obscured by the transmission
pulse. By the adjusting the Tx Null the user can see these
‘near end’ faults more clearly.

Output pulse control

Both the amplitude and width of the output pulse can be
adjusted to provide the best possible reflection for accurate
location of cable faults.

TDR2000/2 (CFL535F)

Cable Fault Locator

Interactive Help Screen

A full graphical help screen is available with keyboard
layout and individual key operation. At the press of a
button.

Trace Storage

15 internal trace memories provide for the storage and
recall of test results. The traces can be recalled to the
display for analysis or compared with an active display to
aid in fault location.

Alternatively the stored results can be downloaded to a
computer, over the RS232 port, using the TraceMaster
software and RS232 lead provided.

Trace Master PC Software

Trace Master provides download and upload facilities
between the TDR and a computer. Traces can be
individually selected, saved to a PC and annotated by the
user. Historical information can be reviewed on the PC or
recalled to the TDR for comparison with current
measurements. Trace-Master is the ideal tool for cable
documentation. Results can be printed from the computer
for inclusion in documents.

Power source

The TDR2000/2 can be supplied as a standard battery
powered unit or in a rechargeable version, as the
TDR2000/2RM or TDR2000/R. Fitted with a NiMH
rechargeable battery pack the TDR2000/2R and
TDR2000/RM are supplied with the charger as standard.

BENEFITS

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11 fault location modes

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For use on Telecom TNV-3 circuit, or 300V CAT III
power circuits with fused leads. Phase to Earth or 415 V
Phase to Phase

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External mains blocking filter not required

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Screen contrast control

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Multi language operation, uploadable using
TraceMaster software

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3 step pulse amplitude control

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Adjustable display contrast

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15 trace internal memory

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Protected to IP54

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High impact ABS case

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Comes with test and carry case and test leads

SPECIFICATION

Except where otherwise stated, this specification applies at an
ambient temperature of 20° C.

Ranges

50 m, 100 m, 200 m, 400 m, 1 km, 2 km, 4 km, 8 km, 16 km
(150 ft, 300 ft, 600 ft, 1200 ft, 3000 ft, 6000 ft, 12000 ft, 24000 ft,
48000 ft)

Resolution

0.1 m (4in.) up to 200 m (600 ft)

0.2 m (8 in.) up to 400 m (1200 ft)

0.1% of range above 400 m (1200 ft)

Measurement Accuracy

0.1% of Range
[Note – The measurement accuracy is for the indicated cursor
position only and is conditional on the velocity being correct]

Input Impedance: 120 Ω.
Input Protection: 300 V CATIII working, 415 V CATIII Phase to

Phase

Output Pulse Amplitude

Nominal 3 V, 5 V and 14 Vpk to pk into an open circuit

Pulse width user selectable:

50m range: 7 ns, 20 ns, 40 ns,
150 ft 60 ns, 80 ns

100m range: 7 ns, 40 ns, 60 ns,
300 ft 80 ns, 100 ns

200 m ranges: 7 ns, 40 ns, 80 ns,
600 ft 140 ns, 200 ns

400 m range: 40 ns, 80 ns, 160 ns,
1200 ft 200 ns, 400 ns

1km range: 80ns, 160ns, 260 ns,
3000 ft 500 ns, 1 ms

2km range: 160 ns, 260 ns,
6000 ft 500 ns, 1 ms, 2 ms

4km range: 240 ns, 500 ns,
12000 ft 1 ms, 2 ms, 4 ms

8km range: 500 ns, 1 ms, 2 ms,
24000 ft 4 ms, 8ms

16km range: 1 ms, 2 ms, 4 ms,
48000 ft 8 ms, 16 ms

(Default pulse width for each range underlined)

Gain: 0 to 90 dB in steps of 6 dB

Velocity Factor

Variable from 0.300 to 0.999 in steps of 0.001
TX Null: 0 Ω to 120 Ω

Screen Update Rate

Once per second or three times per second, (user selectable).

Power Down

Automatic after 5, 10 or 15 minutes with no keys pressed,
(user selectable).

Backlight

Stays on for 1, 2 or 5 minutes when activated, (user selectable).

Communications Port

RS-232C compatible 1 start bit, 8 data bits, 1 stop bit and no
parity, 19200 baud standard
Internal Memory: Storage capacity of 15 waveforms and data